Advance acoustic 56514925, Service Manual

Page: 134 / 260

Hydraulic System 134 Service Manual – Advance 7765 / Nilfisk CR1500
• The
Cylinder Control
Valve
controls the
oil flow to the scrub
deck cylinder and
squeegee deck
cylinder.
Return Block/Manifold
The
Return Block
(called the “Return
Manifold” in the Parts
List) collects the oil
from the various
hydraulic machine
components and
directs it back into the
reservoir.
To Lower Port on
Squeegee Deck Cylinder
To Upper Port on
Squeegee Deck Cylinder
From Port “T” on
Power Steering Unit
To Lower Port on
Scrub Deck Cylinder
To Rear Case Drain
Port on Reservoir
To Upper Port on Scrub
Deck Cylinder
Cylinder
Control Valve
From Side
Broom Valve
From Front Port on
Hopper Lift Cylinder
From Port ”T1” on
Main Control Valve
To Charge Circuit
on Drive Pump
Front
From Case Drain on
Main Broom Motor
and Drive Pump
From Case Drain on
Rear Wheel Motor
From Rear
Oil Cooler
To Reservoir
From Drive
Pump
Return
Block
Vonberg
Check
Valve